PYSEC-2026-1570 LlamaIndex has an XML Entity Expansion vulnerability in its sitemap parser

An XML Entity Expansion vulnerability, also known as a 'billion laughs' attack, exists in the sitemap parser of the run-llama/llamaindex repository, specifically affecting the Papers Loaders package before version 0.3.2 in llama-index v0.10.0 and above through v0.12.29. This vulnerability allows ...